Improvement in steam-boilers



ittico ditta.

PATRIoK QUINN, or soUTH NIIWMAHKHT, New HAMPSHIRE.

Letters Patent No. 110,158, `dated December 13, 1870.

IMPROVEMENT IN STEAM-BOILERS.

The Schedule referred to in these Letters Patent and making part oi the same..

To all whom fit may concern Be it known that I, PATRICK QUINN, of South Newmarket, in the county of Rockingham and State of New Hampshire, have invented certain new and I will now proceed to describe its construction and operation, referring to the annexed drawing, in which- Figure 1 is a longitudinal vertical sectionr of my boiler;

Figure 2 is a horizontal section through line :v c, figl; and A Figure 3 is a bottom view.

A represents the shell of my boiler, provided in the center of its bottom with a downward-projecting chamber B, which I denominate a mud-receiver.

lt will be understood that the boiler rests upon and is surrounded by brick-work for a suitable height, the

grate being located at about the point a (c ou the mud receiver, and the -ames surrounding the lower end of the boiler.

At a suitable point within the boiler A is located the combustion-chamber C, to which the'flames have access from the lire-chamber through the vertical tubes 11b, and the horizontal tubes cl d, the heat then rising through other vertical tubes e e.

The tubes bjb connect the combustion-ohamber, through `lche lower part of the boiler, with the firechamber, andthe tubes :l d pass through the sides of` the boiler. The 'tubes e e pass upward from the combustion-chamber through the upper part of the boiler.

In the center of the combustionchamber is placed a hollow drum, D, with four arms or pipes, ff, passing through from the outside through fou r tubes set for that purpose similar to the tubes del. This hollow drum is perforated all around, and air is forced into the same through the arms ff, by any suitable means. This air will become heated and go through the perforations, producing perfect combustion, igniting and consuming the smoke and gases rising from the lire-chamber.

Through the side of the boiler there is also a large opening, h., into the combustion, so that a man can enter the same for repairs.

Qn the sid'e of the mud-receiver, under the grates, is also a manhole, 7c, for cleaning purposes.

on is the feedavater pipe, which passes through the entire boiler and combustion-chamber, and down to near the bottom of the mud-receiver B. In its down'- ward passage from top to bottom of the boiler, the feed-water in the pipe oit-becomes sufficiently heated to disengage all sediment andimpurities, which at once settle iu'the mudreceiver, While the pure water rises inthe boiler and is convert-ed into steam.

Having thus fully described my invention, lVhat I claim as new, and desire to secure by Letters Patent, is-

1. A combustion-chamber yplaced between tubes iu a tubular upright boiler, and having the flames admitted into it both through the bottom and sides of the boiler, substantially as herein set forth.

2. A- hollow perforated drum, provided with hollow arms or pipes, and placed within the combustion-chamber of a steam-boiler, the hollow arms or pipes communicating with the outside air, substantially as and for the purposes herein set forth. v

3. A feed-water pipe, so arranged as to conduct the feed-water through the boiler and combustion-chamber and deliver at the bottom of the boiler, substantially as and for the purposes herein set forth.

In testimony that I claim the foregoing asv my own, I aiiix my signature iu presence of two witnesses.

PATRICK QUIN N Witnesses:

W. J. QUINN, J. W. MoMANUs. 

